package com.zlq.reggie.filter;

import com.alibaba.fastjson.JSON;
import com.zlq.reggie.common.BaseContext;
import com.zlq.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


@WebFilter(filterName = "loginFilter",urlPatterns = "/*")
@Slf4j
public class LoginFilter implements Filter {
    //路径匹配器，支持通配符
    public static final AntPathMatcher PATH_MATCHER = new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;

        String uri = request.getRequestURI();
        String[] urls = new String[]{
                "/employee/login",
                "/employee/logout",
                "/backend/**",
                "/front/**",
                "/common/**",
                "/user/sendMsg",
                "/user/login"
        };
        boolean check = check(urls, uri);
        if (check){
            filterChain.doFilter(request,response);
            return;
        }
        //判断客户端用户
        if (request.getSession().getAttribute("employee") != null){
            Long empId =(Long) request.getSession().getAttribute("employee");
            BaseContext.setThreadLocalId(empId);
            filterChain.doFilter(request,response);
            return;
        }
        //判断移动端
        if (request.getSession().getAttribute("user") != null){
            Long empId =(Long) request.getSession().getAttribute("user");
            BaseContext.setThreadLocalId(empId);
            filterChain.doFilter(request,response);
            return;
        }
        log.info("用户未登录");
        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
        return;
    }
    public boolean check(String[] urls,String requestURI){
        for (String url : urls){
            boolean match = PATH_MATCHER.match(url, requestURI);
            if (match){
                return true;
            }
        }
        return false;
    }
}
